Circulating apparatus



April 16, 1929. Ass 1,709,468

CIRCULATING APPARATUS Filed Jan. 29, 1927 INVENTORV Howard Fasaefi Patented Apr. 16, 1 929.

marlin HOWARD S. FASSETT, OF CHICAGO, ILLIHQIS, ASSIGNOE TO I? CHICAGG, ELLINQIS.

crincnnarme amass.

ilijiplioaflon died January iesa acacia whereby system is automatically openedin the event or the float controlled valve becoming inoperative.

\Objects pertainin to details and economies of my invention wi l definitely appear from the detailed description to follow. The invention is clearly defined and pointed out in the claims.

A structure embodying the features of my invention is clearly illustrated in the accompanying drawing, in which:

Fig. 1 is a diagrammatic view of a refrigerating apparatus embodying the features of 'my invention, the parts being shown mainly in conventional form.

Fig. 2 is a detail view mainly in vertical section of the float valve chamber showing the relation of the float controlled valve and the by-pass valve and passage.

F i 3 is a detail side elevation of a modified term or embodiment of my invention.

Referring to the drawing, 1 represents the radiator or expansion element of a refrigerating systemg2 the pump and 3 the condenser. These parts are shown conventionally. The intake of the pump is connected to the radiator or expansion element 1 as by the pipe 4. The discharge of the pump is connected to the condenser by the pipe 5 while the condenser is connected to a float valve chamber 7 by the pipe 8 which opens into the top of the float valve chamber., This float valve chamber has a delivery passage 9 connected to the expansion element. This passage 9 is controlled by the delivery-valve 10 supported in a cage 11 and controlled by the float 13, the bell crank arm 14 of which is pivoted at 15 to engage the stem 16 of the valve 10.

In normal operation, when the condensed circulating fluid reaches a predetermined level within the float chamber, the float opens the discharge valve permitting the fluid to flow into the radiator. It is, however, quite a frequent occurrence in refrigerating aye terns, for instance, owing to lubricating oil or excessive pressure accumulating in thh float chamber float will not operate to open the valve, thereby interruptinh; the air culation in system so that it is hcc'essary to get access to the float chamber in order to release the valve. This ordinarilyentailsthe' removal oi the refrigerant J and disassembling a portion of the apparatus. I have provided means for overcoming or preventing this condition.

This I accomplish by means of a byass 17 which in the embodiment illustrated in ig. 2 is formed in the walls of the float chamber and opens to the float chamber above the level of the valve 10 and to the discharge passage 9. This by-pass i7 is controlled by a valve 18 seating outwardly and held normally to its seat by the coiled spring 19. The by-pass has a diaphragm chamber 20 therein or forming a part thereof, the diaphragm 21 being extended across this chamber and operatively associated with the stem 22 of the valve 18. A

from the system v,

spring 23 is provided to assist in the opening of the valve. The spring 19 and the pressure within the float chamber, however, are suf-' ficient to normally hold the valve 18 closed.

When the discharge valve 10 becomes inoperative or does not open, owing to an accumulation of lubricant or excessive pressure within the float housing, the suction of the pump, with which the by-pass is connected, acting through the diaphragm will open the valve 18 and thereby the liquid or gases, preventing the opening of the valve 13, are drawn ofl allowing the float to rise in the event it is held down by excessive pressure, or causing such agitations of the fluid within the float chamber as will move the float and effectively loosen the valve.

In the preferred embodiment shown in Fig. 2 the diaphragm 21 is connected to the valve 10 to positively open the same, the connection consisting of a lever 24 connected to the diaphragm by a link 25 and to the valve by a link 26.

In the modification shown in Fi by-pass passage 27 is in the form 0% a pipe in which the diaphragm controlled valve is located, this valve being indicated generally 3the' by the numeral 28. This is not detailed, however, as the same valve mechanism as is shown in Fig. 2 may be satisfactorily employed. In this modification there is no connection for the diaphragm to the valve such as is shown in Fig. 2.

I have illustrated and described in imrovements in an embodiment which have ound very practical and I have shown the same as embodied in refrigerating machines. M improvements are, however, adapted to other circulatin systems such as heating systems and the li e involving the return 0 a condensate.-

I have not illustrated such other embodiments as I contemplate as I believe the disclosure made will enable those skilled in the art to which my invention relates to embody or ada t the same as may be desired. I

thus described my invention what I c aim as new and desire to secure by Letters Patent, is:

1. In an apparatus of the class described,

- the combination of a radiator, a pump, a condenser, a float valve chamber, a connection for said condenser to said float valve chamber opening to the top thereof, a discharge connection from said float valve chamber to said radiator, a valve controlling said dischar e connection and provided with a float in said chamber, a by-pass connection for said float valve chamber to said radiator opening to said float valve chamber above the said discharge valve, said by-pass having a diaphra in chamber therein, a spring seated inwar y opening by-pass valve for said by-- pass passage,'and a diaphragm in said diaphra in chamber operatively associated with said y-pass valve, said chamber being open to the by-pass at the rear of the by-pass valve.

2. In an apparatus of the class described, the combination of an expansion element, a pump and a condenser having suitable circulation connections, a float valve chamber in the connection between the condenser and the ex ansion element, a float control valve for 511(51'001111805011, anda by-pass connection for said valve chamber to said expansion element provided with a normally seated suction actuated control valve, said vby-pass opening to said float chamber above the normal liquidlevel thereof.

3. In an apparatus of the class described, the combination of an expansion element,a pump and acondenser having suitable circulation connections, a float valve chamber in the connection between the condenser and the expansion element, a float control valve for such connection, and aby-pass connection for said valve chamber to said expansion element provided with a normally seated suction actuated control valve above the level of said discharge valve.

4. In an apparatus of the class described,

the combination of a circulating system including a pump and a condenser .operatively associated with said pum a float chamber operatively associated wit the discharge of said condenser and the intake of the pump, a discharge valve for said float chamber operatively associated with the intake of the pump and provided with a control float with in said float chamber, and a by-pass for said float chamber provided-with a suction ac tu-' ated o crating means, said by-pass opening to sai float chamber above the level of its discharge valve.

5. In an apparatus of the class described, the combination of a circulating system includingapum and a condenser operatively associated wit saidpum a float chamber operatively associated wit the discharge of said condenser and the intake of the pump, a discharge valve for. said float chamber operatively associated with the intake of the pump and provided with a control float with i in said float chamber, and a by-pass for said float chamber provided with a suction actuated operating means.

6. In a circulating system, the combination of a float chamber provided with a discharge valve, a control float for said discharge valve,

a by-pass around said discharge valve, a normally seated control valve for said by-pass, and an actuating diaphragm for said by-pass valve provided with a chamber opemng to the b -pass at the rear of the by-pass valve.

7 n-a circulating system, the combination of a float chamber provided with a discharge valve, a control float for said discharge valve,

a by-pass around said discharge valve, and a 9. In a circulating system, the combination of a float chamber provided with a discharge valve, a control float for said discharge valve, a b -pass around said discharge valve,- a norma ly seated control valve for said by-pass, an actuating di a hragm for said by-pass valve subject to t e circulating system, and operating connections for said diaphragm to said discharge valve.

10. In a circulating system, the combination of a float chamber provided with a discharge valve, a control float for said discharge valve,

a by-pass around said discharge valve open to the circulating system, a normally seated suction actuated control valve for said bypass valve subject to the circulatin system, and operating connections from sai suction actuated valve actuating means to said disated member in said by-pass, and operating charge valve. connections from said suction actuated mem- 11. In a circulating'system, the combination bar to said discharge valve. 10

'ofa float chamber provided with a discharge In witness whereof I have hereunto set valve, a control float for said dischar e valve, my hand. a by-gass around said discharge va ve connecte to the suction system, a suction actu- HOWARD S. FASSETT. 

